EP3696919A1 - Kabel und verfahren zur herstellung des kabels - Google Patents

Kabel und verfahren zur herstellung des kabels Download PDF

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Publication number
EP3696919A1
EP3696919A1 EP20157411.8A EP20157411A EP3696919A1 EP 3696919 A1 EP3696919 A1 EP 3696919A1 EP 20157411 A EP20157411 A EP 20157411A EP 3696919 A1 EP3696919 A1 EP 3696919A1
Authority
EP
European Patent Office
Prior art keywords
cable
contact zone
electrical conductor
contact
core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20157411.8A
Other languages
English (en)
French (fr)
Inventor
Andre Martin DRESSEL
Florian Brabetz
Frank Kaehny
Gerzson Toth
Richard Eiberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TE Connectivity Germany GmbH
Original Assignee
TE Connectivity Germany GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TE Connectivity Germany GmbH filed Critical TE Connectivity Germany GmbH
Publication of EP3696919A1 publication Critical patent/EP3696919A1/de
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/009—Cables with built-in connecting points or with predetermined areas for making deviations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/65—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0207—Ultrasonic-, H.F.-, cold- or impact welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/0036—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0009—Details relating to the conductive cores
    • H01B7/0018—Strip or foil conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/08—Flat or ribbon cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/08—Flat or ribbon cables
    • H01B7/0807—Twin conductor or cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/61—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connecting to flexible printed circuits, flat or ribbon cables or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/62—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connecting to rigid printed circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections
    • H01R4/029—Welded connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0221—Laser welding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to a cable with at least one electrically conductive cable core and one insulation that at least partially encases the at least one cable core, wherein the cable has at least one contact zone for contacting an electrical conductor and wherein the at least one cable core is exposed in the at least one contact zone. Furthermore, the invention relates to a method of manufacturing such a cable and to a cable connection between the cable and an electrical conductor.
  • Such cables are connected, in particular through ultrasound welding, to cell connectors of battery cells in a motor vehicle, for example, for the purpose of measuring difference in potential.
  • a sonotrode is placed onto the contact zone.
  • the sonotrode is caused to produce resonation which can be transferred to the contact zone.
  • friction gives rise to an atomic connection between the contact zone and the electrical conductor.
  • a minimum size of contact zone is required, so that the sonotrode can be placed on. Miniaturisation of the cable is thus prevented by the size of the contact zone.
  • the object of the invention is to create a cable or a cable connection with as small a contact zone as possible. Moreover, the object of the invention is to provide a method of producing such a cable.
  • the object is achieved according to the invention for the above-mentioned cable in that the contact zone is filled such that a surface of the contact zone is arranged substantially flush with a cable surface.
  • the object is achieved through a cable connection according to the invention, in that the cable according to the invention and an electrical conductor are connected to one another at the contact zone by a laser welding connection.
  • the cable is manufactured by filling the contact zone until a surface of the contact zone is arranged substantially flush with a cable surface.
  • the contact zone can be pushed against the electrical conductor and be connected to the electrical conductor, in particular by laser welding.
  • a further advantage through the filling of the contact zone until the surface of the contact zone is arranged substantially flush with the cable surface is that the cable core no longer has to be deformed, in particular no longer has to be pushed against the electrical conductor in order to contact the electrical conductor. As a result, the cable core can be prevented from tearing during connection and it is also possible to use cable cores which are relatively less thick.
  • an electrically conducting contact material can be applied in the contact zone.
  • a mechanical connection but also an electrically conducting connection, can be produced between the electrical conductor and the cable.
  • the at least one cable core can preferably likewise be formed from the electrically conducting contact material. As a result, a homogeneous electrical system is created and contact corrosion between the contact material which fills the contact zone, and the cable core is avoided. Furthermore, this can lead to a simple cable connection design.
  • the at least one contact zone can be galvanically coated until the surface of the at least one contact zone is arranged substantially flush with the cable surface.
  • the contact zone can be galvanically coppered, for example, in particular by means of reverse pulse plating or by means of via plating. As a result, the contact zone can be filled simply and precisely.
  • the at least one contact zone can have a width of a maximum of approximately 0.8 mm.
  • the user acquires greater freedom in designing the cable connection, since with such a small contact zone a greater degree of tolerance is obtained in the positioning thereof relative to the electrical conductor.
  • the cable can have at least two cable cores arranged alongside one another, and in particular electrically insulated from one another, wherein each cable core can be exposed in at least one contact zone.
  • the contact zones at which the adjacent cable cores are exposed are spaced apart and/or separated from one another.
  • the contact zones of the at least two cable cores can be arranged offset from one another.
  • the contact zones of the at least two cable cores can preferably be arranged offset from one another in a cable direction, along which the at least two cable cores extend. Soldering bridges can thus be avoided, in particular during soldering. If the contact zones are arranged offset from one another, the cable cores situated alongside one another can be brought closer to one another, without running the risk of unintentional bridge connection arising between the cable cores. Therefore, through offset contact zones, the dimensions of the cable, in particular its width, can be reduced.
  • each cable core is exposed at at least two contact zones. There are thus at least two attachment possibilities for each cable core.
  • the at least two contact zones are preferably spaced apart from one another in the cable direction.
  • the cable core can thus be connected to an electrical conductor, such as a cell connector of a battery module, at the first contact zone and to a circuit board at the second contact zone.
  • the cable can preferably be configured as a flat cable, in particular as a flexible flat cable, in which several cable cores are arranged parallel to one another on a level plane.
  • Each cable core can be connected to a separate electrical conductor, or to the electrical conductor at points which are spaced apart from one another in the cable direction.
  • at least one cable core can be provided for each battery cell in a battery module which is constructed from several battery cells which are arranged in rows and connected by means of a cell connector.
  • the flat cable can furthermore be soldered onto a circuit board, as a result of which, for example, the potential difference between the individual battery cells can be simply measured.
  • the contact zone can be reduced in size as a result of the contact zone which is filled substantially flush with the cable surface in accordance with the invention.
  • the flat cable can be equipped with a larger number of cable cores, for example, as a result of which the number of battery cells contacted by the flat cable increases, without increasing the width of the flat cable compared to conventional flat cables.
  • the width of a cable core can thus be smaller than approximately 1 mm.
  • the at least one contact zone can be filled up on both sides substantially flush with the cable surface.
  • the contact zone can therefore be filled up particularly above and below the cable core.
  • the cable core is thus strengthened at the contact zone and the cable can be pushed against the electrical conductor from above without any problems.
  • the cable core can have a comparatively smaller thickness, for example 0.075 mm, as the cable core does not have to be deformed for connection to the electrical conductor and is fixed in its position and protected by the contact zone which is filled up on both sides.
  • the cable core and/or the flat cable can have a uniform thickness over the cable direction, as a result of which it is possible to guarantee safety from twisting, in particular when rolling up the cable core and/or the flat cable.
  • the at least one contact zone can preferably be circular, in particular in a cross-section along the cable direction.
  • the filled-up contact zone thus substantially describes a cylinder.
  • a central axis can be arranged substantially perpendicular to the cylinder axis and intersect it.
  • At least one contact zone can be supplied with a solder ball and/or a solder ball can be placed onto at least one contact zone. This can simplify the soldering of the cable onto a circuit board, for example.
  • the cable can be connected to the contact zone by means of a laser-welded connection to the circuit board.
  • the contact zone can be galvanically filled, for example by way of electroplating. As a result, a precise and cost-efficient filling of the contact zone is possible.
  • the contact zone can preferably be filled up by means of reverse pulse plating or via plating.
  • the cable connection can have at least one further electrical conductor, for example a circuit board which is connected to the cable at at least one contact zone.
  • the circuit board can be soldered onto the contact zone or can have a welded connection through laser welding, for example.
  • the cable can extend along the cable direction over the electrical conductor and can be connected to the electrical conductor at contact zones which are offset from one another along the cable direction. As a result, it is possible to prevent the contact zones of the cable cores from being arranged in a straight line perpendicular to the cable direction, and to prevent unintentional bridging from occurring during connection.
  • Fig. 1 shows a cable 1 according to the invention in a sectional view along a cable direction 2.
  • the cable 1 extends along the cable direction 2 and has at least one cable core 4, which is encased at least partially by an insulation 6.
  • an electrical conductor 8 which is schematically depicted in Fig. 1 , the cable core 4 is exposed in a contact zone 10.
  • the contact zone 10 is filled so that a surface 12 of the contact zone 10 is arranged substantially flush with the surface 14 of the cable 1, in particular the insulation 6.
  • the surface 12 of the contact zone 10 can be pushed against the electrical conductor 8 without great difficulty and without deforming the cable core 4. It is consequently possible, at the contact zone 10, to keep the distance between the contact zone 10 and the electrical conductor 8 small and to connect the cable 1 to the electrical conductor 8 preferably by means of laser welding methods.
  • an electrically conductive contact material 16 can be applied galvanically onto the cable core 4, so that not only a mechanical connection between the cable 1 and the electrical conductor 8, but also an electrically conductive connection, is produced in the contact zone 10.
  • the electrically conductive contact material 16 can be applied preferably galvanically, for example by means of a reverse pulse plating. It is particularly advantageous if the cable core 4 is formed from substantially the same contact material 16, so that no electrical multiphase system arises between a filling 18 of the contact zone 10 and the cable core 4. "Substantially” here means that the cable core 4 and the electrically conductive contact material 16 possess the same main component, and thus the cable core 4 for example can be formed from a copper alloy and the electrically conductive contact material 16 can be a different copper alloy.
  • the contact zone 10 which is filled substantially flush with the surface 14, the contact zone can be held down without great difficulty, for example for laser welding. As a result, it is possible to keep a width 20 of the contact zone 10 small compared to a contact zone at which the cable 1 is connected to the electrical conductor 8 by means of laser welding. In the case of the known ultrasound welding, the cable core 4 is pushed against the electrical conductor 8 with a sonotrode, and therefore the width of the contact zone 10 must be sufficiently large to allow the sonotrode to be placed on the cable core.
  • the contact zone 10 can for example have a width 20 of a maximum of approximately 0.8 mm.
  • the cable 1 is a flat cable 22, in which several cable cores 4 are arranged parallel alongside one another on a level plane (see Fig. 2 ).
  • the flat cable 22 is preferably a flexible flat cable (FFC), in which the cable cores 4 are configured as metal strips 24 with a thickness 26 and a width 28.
  • the flat cable 22 can extend over the electrical conductor 8 and each cable core 4 can be connected to the electrical conductor 8.
  • each cable core 4 is exposed at at least one dedicated contact zone 10.
  • the contact zones 10 are arranged offset from one another in cable direction 2.
  • the flat cable 22 can be connected to the electrical conductor 8, or also to different electrical conductors, at different positions along the cable direction 2.
  • the contact zone 10 above and below the cable core 4 is filled perpendicular to the cable direction 2, until its surface 12 is arranged substantially flush with the cable surface 14 on an underside 30 and an upper side 32 which is situated opposite the underside 30.
  • the cable core 4 can thus be protectively encased by the filling 18.
  • a force can be exerted on the cable 1 at the upper side 32, in order to hold the contact zone 10 down during the joining process, without additionally stressing or deforming the cable core 4. Since a deformation of the cable core 4 is avoided, the thickness 26 of the cable core 4 can be minimised to approximately 0.075 mm.
  • a cable core 4 with such a thickness 26 could tear in the event of a deformation, for example, as a result of pressing down with a sonotrode.
  • the cable 1 can thus be arranged at a contact zone below an electrical conductor 8, or above.
  • Figure 2 schematically depicts a cable connection 34 according to the invention in a plan view.
  • the cable 1 is a flexible flat cable 22 which is laid onto the electrical conductor 8 and which extends over this in the cable direction 2.
  • the electrical conductor 8 is, for example, a cell connector 36 which connects together individual battery cells 38 which are arranged in rows.
  • each cable core 4 has at least two contact zones 10 spaced apart from one another in the cable direction.
  • the cable core 4 can be connected to the electrical conductor 8 in one contact zone 10 and to a further conductor, for example a circuit board 40, in the other contact zone 10.
  • the cable cores 4 which lie alongside one another are preferably supplied with contact zones 10 which are offset from one another, so that in each case a cable core 4, at the height of a battery cell 38, can be connected to the electrical conductor 8.
  • the contact zones 10 are arranged offset from one another in cable direction 2 for connection to the circuit board 40. As a result, it is possible to prevent unintentional bridging between the cable cores 4 when soldering or welding.
  • the contact zones 10 can be configured such that they are suitable to receive a solder ball (not shown).
  • the circuit board 40 can be supplied with solder balls which can be placed onto the contact zone 10 in order to produce a simple and efficient solder connection between the circuit board 40 and the contact zone 10.
  • a width 20 of the contact zone 10 can be greater than the width of the solder ball.
  • the filling 18 is stable and does not become deformed through the pressing-on of the solder ball.
  • the contact zone 10 preferably has a round cross-section 44.
  • the filled contact zone 10 thus substantially describes a cylinder 46.
  • a central axis of the cable core 4 can be arranged substantially perpendicular to the cylinder axis and can intersect it.
  • the width 20 of the contact zone 10 can be greater than the width 28 of the cable core 4.
  • the cable core 4 can be protectively surrounded by the filling 18 in the contact zone 10.
  • the width 20 of the contact zone 10 can also be smaller than the width 28 of the cable core 4.
  • the contact zone 10 is further minimised, which makes it possible to further miniaturise the cable 1 and the cable connection 34.
  • the space required to hold down the cable 1 can be significantly reduced.
  • the contact zone 10 can be pushed against the electrical conductor 8 and can be connected to the electrical conductor 8 preferably by means of laser welding. As a result, a significantly smaller welding point is obtained compared to ultrasound welding, in which case a sonotrode has to be placed onto the welding point.
EP20157411.8A 2019-02-15 2020-02-14 Kabel und verfahren zur herstellung des kabels Pending EP3696919A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019202061.5A DE102019202061A1 (de) 2019-02-15 2019-02-15 Kabel und Verfahren zum Herstellen des Kabels

Publications (1)

Publication Number Publication Date
EP3696919A1 true EP3696919A1 (de) 2020-08-19

Family

ID=69630148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20157411.8A Pending EP3696919A1 (de) 2019-02-15 2020-02-14 Kabel und verfahren zur herstellung des kabels

Country Status (4)

Country Link
US (1) US11127511B2 (de)
EP (1) EP3696919A1 (de)
CN (1) CN111585138A (de)
DE (1) DE102019202061A1 (de)

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US11127511B2 (en) 2021-09-21
CN111585138A (zh) 2020-08-25
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